Methods for coding recovery point supplemental enhancement information (SEI) messages and region refresh SEI messages in multi-layer coding are disclosed. In one aspect, the method may include determining at least one picture among a plurality of pictures included within an access unit with which to associate at least one recovery point SEI message, the access unit being included within the multi-layer bitstream. The method may further include associating the at least one recovery point SEI message with the determined at least one picture. The method may also include coding the video information based at least in part on the association of the at least one recovery point SEI message with the determined at least one picture.
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1. A method for coding video information of a multi-layer bitstream, comprising: determining at least one picture among a plurality of pictures included within an access unit with which to associate at least one recovery point supplemental enhancement information (SEI) message, each of the plurality of pictures of the access unit being included within different layers of the multi-layer bitstream; associating the at least one recovery point SEI message with more than one picture included in the access unit, the at least one recovery point SEI message contained by a scalable nesting SEI message and being indicative of a recovery point in which all pictures included in layers of the multi-layer bitstream associated with the recovery point SEI message will be correct in decoded content; identifying a first picture from the more than one picture associated with the recovery point SEI message with which to associate a first region refresh SEI message, wherein the first region refresh SEI message indicates whether regions of the first picture to which the first region refresh SEI message applies belong to a refreshed region of the first picture; associating the first region refresh SEI message with the first picture, the first region refresh SEI message being indicative of whether individual slices of the first picture is correct in content after decoding; and coding the video information based at least in part on the association of the at least one recovery point SEI message with the more than one picture and the association of the first region refresh SEI message with the first picture.
2. The method of claim 1 , wherein the associating the at least one recovery point SEI message with the more than one picture comprises: associating a first recovery point SEI message with the first picture of the access unit; and associating a second recovery point SEI message with a second picture of the access unit.
3. The method of claim 1 , wherein the access unit comprises the first picture in a first layer and a second picture in a second layer, the second layer being a dependent layer of the first layer, wherein the associating comprises: determining whether the first picture is known to be within a defined range for correct decoding of the first picture; and associating the at least one recovery point SEI message with the second picture in response to determining that the first picture is known to be within the defined range.
4. The method of claim 1 , further comprising associating a second region refresh SEI message with another picture of the subset of the plurality of pictures associated with the at least one recovery point SEI message, wherein the second region refresh SEI message indicates whether regions of the other picture to which the second region refresh SEI message applies belong to a refreshed region of the other picture.
5. The method of claim 1 , wherein the at least one recovery point SEI message comprises an indication of a recovery point picture and an exact match flag, the method further comprising: determining whether decoding of the video information beginning at the access unit would result in the same recovery point picture as decoding the video information beginning at an intra random access point (IRAP) picture; and setting the exact match flag to indicate that the decoding of the video information would result in the same recovery point picture in response to determining that the decoding of the video information would result in the same recovery point picture.
6. A device for coding video information of a multi-layer bitstream, comprising: a memory configured to store the video information; and a processor implemented in circuitry and in communication with the memory, the processor configured to: determine at least one picture among a plurality of pictures included within an access unit with which to associate at least one recovery point supplemental enhancement information (SEI) message, each of the plurality of pictures of the access unit being included within different layers of the multi-layer bitstream; associate the at least one recovery point SEI message with more than one picture included in the access unit, the at least one recovery point SEI message being contained by a scalable nesting SEI message and being indicative of a recovery point in which all pictures included in layers of the multi-layer bitstream associated with the recovery point SEI message will be correct in decoded content; identify a first picture from the more than one picture associated with the recovery point SEI message with which to associate a first region refresh SEI message, wherein the first region refresh SEI message indicates whether regions of the first picture to which the first region refresh SEI message applies belong to a refreshed region of the first picture; associate the first region refresh SEI message with the first picture, the first region refresh SEI message being indicative of whether individual slices of the first picture is correct in content after decoding; and code the video information based at least in part on the association of the at least one recovery point SEI message with the more than one picture and the association of the first region refresh SEI message with the first picture.
7. The device of claim 6 , wherein the processor is further configured to: associate a first recovery point SEI message with the first picture of the access unit; and associate a second recovery point SEI message with a second picture of the access unit.
8. The device of claim 6 , wherein the access unit comprises the first picture in a first layer and a second picture in a second layer, the second layer being a dependent layer of the first layer, wherein the processor is further configured to: determine whether the first picture is known to be within a defined range for correct decoding of the first picture; and associate the at least one recovery point SEI message with the second picture in response to the determination that the first picture is known to be within the defined range.
9. The device of claim 6 , wherein the processor is further configured to associate a second region refresh SEI message with another picture of the subset of the plurality of pictures associated with the at least one recovery point SEI message, wherein the second region refresh SEI message indicates whether regions of the other picture to which the second region refresh SEI message applies belong to a refreshed region of the other picture.
10. The device of claim 6 , wherein the at least one recovery point SEI message comprises an indication of a recovery point picture and an exact match flag, and wherein the processor is further configured to: determine whether decoding of the video information beginning at the access unit would result in the same recovery point picture as decoding the video information beginning at an intra random access point (TRAP) picture; and set the exact match flag to indicate that the decoding of the video information would result in the same recovery point picture in response to determining that the decoding of the video information would result in the same recovery point picture.
11. An apparatus, comprising: means for determining at least one picture among a plurality of pictures included within an access unit with which to associate at least one recovery point supplemental enhancement information (SEI) message, each of the plurality of pictures of the access unit being included within different layers of a multi-layer bitstream; means for associating the at least one recovery point SEI message with more than one picture included in the access unit, the at least one recovery point SEI message being contained by a scalable nesting SEI message and being indicative of a recovery point in which all pictures included in layers of the multi-layer bitstream associated with the recovery point SET message will be correct in decoded content; means for identifying a first picture from the more than one picture associated with the recovery point SEI message with which to associate a first region refresh SEI message, wherein the first region refresh SEI message indicates whether regions of the first picture to which the first region refresh SEI message applies belong to a refreshed region of the first picture; means for associating the first region refresh SEI message with the first picture, the first region refresh SEI message being indicative of whether individual slices of the first picture is correct in content after decoding; and means for coding the video information based at least in part on the association of the at least one recovery point SET message with the more than one picture and the association of the first region refresh SEI message with the first picture.
12. The apparatus of claim 11 , wherein the means for associating comprises: means for associating a first recovery point SEI message with the first picture of the access unit; and means for associating a second recovery point SEI message with a second picture of the access unit.
13. The apparatus of claim 11 , wherein the access unit comprises the first picture in a first layer and a second picture in a second layer, the second layer being a dependent layer of the first layer, wherein the means for associating comprises: means for determining whether the first picture is known to be within a defined range for correct decoding of the first picture; and means for associating the at least one recovery point SEI message with the second picture in response to determining that the first picture is known to be within the defined range.
14. The apparatus of claim 11 , further comprising means for associating a second region refresh SEI message with another picture of the subset of the plurality of pictures associated with the at least one recovery point SEI message, wherein the second region refresh SEI message indicates whether regions of the other picture to which the second region refresh SEI message applies belong to a refreshed region of the other picture.
15. The apparatus of claim 11 , wherein the at least one recovery point SEI message comprises an indication of a recovery point picture and an exact match flag, the apparatus further comprising: means for determining whether decoding of the video information beginning at the access unit would result in the same recovery point picture as decoding the video information beginning at an intra random access point (IRAP) picture; and information would result in the same recovery point picture in response to determining that the decoding of the video information would result in the same recovery point picture.
16. A non-transitory computer readable storage medium having stored thereon instructions that, when executed, cause a processor of a device to: determine at least one picture among a plurality of pictures included within an access unit with which to associate at least one recovery point supplemental enhancement information (SEI) message, each of the plurality of pictures of the access unit being included within different layers of a multi-layer bitstream; associate the at least one recovery point SEI message with more than one picture included in the access unit, the at least one recovery point SEI message being contained by a scalable nesting SEI message and being indicative of a recovery point in which all pictures included in layers of the multi-layer bitstream associated with the recovery point SEI message will be correct in decoded content; identify a first picture from the more than one picture associated with the recovery point SEI message with which to associate a first region refresh SEI message, wherein the first region refresh SEI message indicates whether regions of the first picture to which the first region refresh SEI message applies belong to a refreshed region of the first picture; associate the first region refresh SEI message with the first picture, the first region refresh SEI message being indicative of whether individual slices of the first picture is correct in content after decoding; and code the video information based at least in part on the association of the at least one recovery point SEI message with the more than one picture and the association of the first region refresh SEI message with the first picture.
17. The non-transitory computer readable storage medium of claim 16 , further having stored thereon instructions that, when executed, causes the processor to: associate a first recovery point SEI message with the first picture of the access unit; and associate a second recovery point SEI message with a second picture of the access unit.
18. The non-transitory computer readable storage medium of claim 16 , wherein the access unit comprises the first picture in a first layer and a second picture in a second layer, the second layer being a dependent layer of the first layer, the non-transitory computer readable storage medium further having stored thereon instructions that, when executed, cause the processor to: determine whether the first picture is known to be within a defined range for correct decoding of the first picture; and associate the at least one recovery point SEI message with the second picture in response to determining that the first picture is known to be within the defined range.
19. The non-transitory computer readable storage medium of claim 16 , further having stored thereon instructions that, when executed, cause the processor to associate a second region refresh SEI message with another picture of the subset of the plurality of pictures associated with the at least one recovery point SEI message, wherein the second region refresh SEI message indicates whether regions of the other picture to which the second region refresh SEI message applies belong to a refreshed region of the other picture.
20. The non-transitory computer readable storage medium of claim 16 , wherein the at least one recovery point SEI message comprises an indication of a recovery point picture and an exact match flag, the non-transitory computer readable storage medium further having stored thereon instructions that, when executed, cause the processor to: determine whether decoding of the video information beginning at the access unit would result in the same recovery point picture as decoding the video information beginning at an intra random access point (TRAP) picture; and set the exact match flag to indicate that the decoding of the video information would result in the same recovery point picture in response to determining that the decoding of the video information would result in the same recovery point picture.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
December 29, 2014
February 11, 2020
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